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Blogrolling for Today

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Profile picture for user clock
By clock on May 16, 2007.

OptimalScholarship

The Fact Box

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Evolutionary Psychology: The New Science of the Brain

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More by this author

New URL for this blog
July 5, 2011
Earlier this morning, I have moved my blog over to the Scientific American site - http://blogs.scientificamerican.com/a-blog-around-the-clock/. Follow me there (as well as the rest of the people on the new Scientific American blog network
New URL/feed for A Blog Around The Clock
July 26, 2010
This blog can now be found at http://blog.coturnix.org and the feed is http://blog.coturnix.org/feed/. Please adjust your bookmarks/subscriptions if you are interested in following me off-network.
A Farewell to Scienceblogs: the Changing Science Blogging Ecosystem
July 19, 2010
It is with great regret that I am writing this. Scienceblogs.com has been a big part of my life for four years now and it is hard to say good bye. Everything that follows is my own personal thinking and may not apply to other people, including other bloggers on this platform. The new contact…
Open Laboratory 2010 - submissions so far
July 19, 2010
The list is growing fast - check the submissions to date and get inspired to submit something of your own - an essay, a poem, a cartoon or original art. The Submission form is here so you can get started. Under the fold are entries so far, as well as buttons and the bookmarklet. The instructions…
Clock Quotes
July 18, 2010
At bottom every man know well enough that he is a unique being, only once on this earth; and by no extraordinary chance will such a marvelously picturesque piece of diversity in unity as he is, ever be put together a second time. - Friedrich Wilhelm Nietzsche

More reads

Tiny Visions: Capturing the Nanoscale in 3D
Building 3D images gets trickier with objects bilions of times smaller. (courtesy Electric-Eye on Flickr) Let's start with a number, by chance a palindrome: 1441. Imagine taking that many photographs of a single object, a soccer ball, say - obsessively capturing it from every angle to expose all the details. Those 1441 images provide all the evidence needed to illustrate and understand the…
Dark Matter: what it does, what it doesn't do
"You still don't get it, do you? He'll find her! That's what he does! That's ALL he does! You can't stop him!" -Kyle Reese, the Terminator Now that we've all survived Judgment Day, we can stop looking for ways to stop the Terminators, and go back to the search for dark matter. Let's back up a bit, though, and take a look at normal matter first. As you well know, normal matter here on Earth is…
Enforcing the Cosmic Speed Limit
Last time we took a pulse of light and shot it through a medium with a frequency-dependent refractive index. The particular form of the refractive index was sort of interesting - for some frequencies, it was less than 1. That implied that the phase velocity of a sine wave would be faster than the speed of light. But pulses of light contain a band of frequencies so normally we'd invoke the group…

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